Needle-threading attachment



March 4 1924.

. Q 1,485,684 D. A. LIVINGSTON NEEDLE THRBADiNG ATTACHMENT Filed July 19. 1920 Patented Mar. d, 124%.

UETS SS DAVID ALEXANDER LIVINGSTON, OF IEETCHOSIN, BRITISH COLUMBIA, CANADA.

NEEDLE-THREADING ATTACHMENT.

Application filed July 19,

To all ac/20m it may concern:

Be it known that I, Davin ALEXANDER LIvINosToN, a subject of the King of Great Britain, and a resident of the 0st Office of Metchosin, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Needle- Threading Attachments, of which the following is the specification.

The invention relates to improvements in needle threading attachments and particularly for use on sewing machines wherein there is a comparatively small eye in the needle and an object of the invention is, to provide a simply constructed inexpensive and durable device which can be readily attached to the needle and by the use of which one can quickly and positively thread the needle.

A further object of the invention is to construct the appliance from as few parts as possible and so that it can be fitted to the varying existing types of needles and also so that it can be adjusted on the needle to accommodate the threader to the needle eve.

A still further object is to arrange the appliance so that it can be quickly thrown to non-use or set position. With the above more important objects in view, the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described and later pointed out in the appended claim reference being had to the accompanying drawing in which Fig. l is a side view of the foot end of a sewing machine and showing my appliance attached to the needle.

Fig. 2 is an enlarged side view of the attachment as it appears secured to the needle.

Fig. 3 and Fig. 4 are opposite end views of the attachment on the needle.

Fig. 5 is a plan view of the parts as they appear in Fig. 2.

Fig. 6 is an enlarged detailed vertical sectional View throughthe attachment and ne%dle.

1g. 7 Fig. 6.

Fig. 8 is'a plan view of the threader cone member as it would appear opened up and flattened.

Fig. 9 is an enlarged detailed end view the cone shaped member. In the drawing like characters of referis a vertical sectional view at 77 1920. Serial No. 397,536.

ence indicate corresponding parts in the several figures.

1 is the foot end of a sewing machine which presents the customary needle bar 2 carrying the needle 3 and the customary foot piece bar 41- carrying the foot piece 5.

The needle is detacliably clamped to the needle bar in the usual manner, the winged clamping screw being indicated at 6.

I have not considered it necessary to give a detailed description of the former parts as they are well known and form no part of my invention.

The threading attachment which I provide is detachably secured to the needle and comprises the following parts.

'7 is a metallic body piece provided at one end with. a vertical slot-like openingS which has the inner end rounded as indicated at 9 and the other end flat and the sides slightly bellying inward as indicated at 10.

At the outer end of the slot I locate a jam block 11 which is slidable in and out within the slot and is actually held within the slot by having the upper and lower ends flared to accommodate the inwardly curving sides of the slot (see Fig. 7). This is a simple way of retaining the block in the slot, but of course, I do not desire to be limited to the arrangement shown as this can be readily modified as will be readily understood.

The block 11 is engaged by an adjusting screw 13, screw threading through the body 7 and fitted with a head having a cross slot 14 therein so that it can be manipulated by a screw driver.

Obviously one can readily attach the body piece to the needle by passing the needle through the inner end of the slot and then screwing in the screw 13 to cause the block 11 to jam the needle against the rounded end 9 of the body piece.

The upper corner of the body piece at the end remote from the screw is partially cut away to provide a cross groove 15 somewhat in from the end of the body piece and which is approached by a curved face of an ogee shape, 16 is a spring over-hanging the groove and the ogee face and secured to the body piece in any suitable manner. In the drawing this is accomplished by means of a screw 17, but if desired it can be permanently riveted to the body piece. 18 is a somewhat cone shaped guide having a threading opening 19 formed at the peak of the cone memher, a pair of opposing lining tongues 20 and 21 positioned beneath the opening and a pair 01" fastening flanges 22 and 23 located on the under side.

Actually the cone shaped member is formed from a single piece of metal stamped initially in the shape shown in Figure 8. After being cut in this shape the blank is bent in to a more or less cone shape the tongues being opposed and a thread release opening 2 L being nraintained at the bottom side. After being bent in to this latter shape the cone member is attached to an arm formed from a single length or still wire looped to present two legs 25 and 26 the extremities of which are attached to the holder by means oi the flanges 22 and 23 the flanges being actually rolled over the ext-reinities of the wire which are bent sideways as best shown in Figure 2. The loop end of the Wire is bent into a position at right angles to the legs as shown at 2? and this looped part is inserted into the groove 15 between the spring 16 and the end of the body piece.

I desire that the free end 01 the spring move up to allow the loop to pass into position and that when it in its linal position the spring bear down on it sutliciently to prevent the legs from swinging freely.

When the device is in position on the needle the tongues 20 and 21 span the eye end of the needle and line the openin 19 of the threader with the eye of the needle. Consequently it is an easy matter to insert the end of a thread into the large end of the cone member and shove it in until it passes through the opening 19 and into and through the needle eye. ()nce this is accomplished the thread is pulled down through the slit reserve at 24; to free it from the threader and leave it threaded through the eye. One can then swing the legs upwardly to a position as shown in dotted outline in Figure 1 or can remove the legs from the body piece 7 by pulling the loop forcibly outwardly from between'the spring and the body piece.

In case one encounters a long needle additional adjustment can be had by reversing or turning the body piece up side down to bring the groove 15 underneath and then reversing the position of the legs. l v so doin one gains the depth of the body new which actually a ltled to the length of the legs and can then make the tinal adjitistment by the screw 13 on the needle. YVhilst 1 have described the member as a cone shaped member i wish to be understood that this is not a true description of it as it only approximates a cone and actually the base of the cone is cut away at a slant to allow of the easy insertion of the thread when one is threading the needle.

What I claim as my invention is In a needle threading attachment for a sewing machine a thread guide consisting of a split, horizontally disposed, conical body, having the split on the under side, the divided edges of the body being spaced apart and provided with spaced aligning extensions projecting beyond the small end of the body, horizontal sleeves carried by the opposite sides of the body, a supporting member and a pair of vertically extending arms suspended from said supporting member and having the ends of the arms bent and entering the sleeves to support the cone body.

Signed at l vinnipeg this 19th day of June, 1920.

G. S. Roxnunon, K. B. WAKEFIELD. 

